Meniscal tear complications depend on the location of the tear...tears towards the rear of the structure or on the edge have less blood supply and therefor:
1. Do not heal on their own and continue to degenerate/ deteriorate
2. Are easily roto-rooted out by your friendly neighorhood orthopod under arthroscopic surgery (see Kyo's post)
If the tear is complex and involoves the "meaty portion" of the structure-then the attempt can be made to sew the edges back together and restore proper blood supply. After 4+ months this is probably not going to be likely-but, it's still a possibility.
Get to a pod who likes to do knees and you should be up and gunning again within a month
Keep us posted.
Eagle
and yes...the surgery to fix it IS worth the PITA of being off your feet for a few days.